I've left my hometown and am now living in Tokyo, so I took advantage of a long weekend to return to my parents' house for the first time in a while. My parents and grandfather live in my parents' house. My grandmother passed away, and my grandfather is depressed and half-bedridden, so my mother is caring for him. My father has no interest in family life and is always out and about. One day, I heard a strange voice coming from my grandfather's room. It sounded like the meowing of a horny stray cat. Curious, I quietly opened the sliding screen door. There I was, my mother moaning while my grandfather devoured her breasts, and my grandfather lovingly played with his penis...